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0321475892 - ESAB Replacement Control Knob D21 for 1/4 Inch Shaft

Packaging: pack of 1
$14.30/EA $9.81/pack of 1 only $9.81/EASave 31%

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OVERVIEW

Restore Precision Control with Genuine ESAB Parts

The ESAB 0321475892 Knob D21 is a critical interface component designed for ESAB welding power sources and wire feeders. In industrial environments, control knobs are often subjected to mechanical stress, impact, and wear, leading to looseness or complete failure. This genuine OEM replacement part ensures that operators can maintain precise control over welding parameters such as voltage, amperage, and wire feed speed. Designed specifically for a 1/4-inch (6.35mm) shaft, this knob provides a secure mechanical connection to the underlying potentiometer or encoder.

The "D21" designation refers to the specific form factor and diameter of the knob, ensuring it matches the aesthetic and ergonomic design of the original equipment. Using non-OEM knobs can often result in clearance issues, poor visibility of setting indicators, or slippage on the shaft. This ESAB component is manufactured from high-grade industrial plastic, offering resistance to the heat and UV exposure common in welding environments. It features a clear position indicator, allowing for accurate repeatability of weld settings, which is essential for maintaining WPS compliance and process consistency.

Maintenance teams and MRO specialists understand that a missing or broken knob is more than a cosmetic issue; it is a safety and productivity hazard. Attempting to adjust a bare potentiometer shaft with pliers or fingers is inefficient and can damage the electrical component. By stocking the ESAB 0321475892, you ensure that your fleet of ESAB equipment remains fully operational and safe for use. This part is compatible with a range of ESAB machines; please verify the parts manual for your specific model to confirm the 0321475892 part number.

Key Technical Specifications:

  • Shaft Fitment: 1/4 Inch (Standard Potentiometer Shaft)
  • Style Code: D21
  • Material: High-Impact Polymer
  • Indicator: Integrated Position Line
Additional Information
Packaging Description:pack of 1
Product Type:Control Knob
Material:Industrial Plastic
Color:Black
----- new values below ----
Diameter Code:D21
Material:Industrial Plastic
Color:Black

INCLUDED

  • 1 x ESAB D21 Control Knob (1/4" Shaft)

APPLICATIONS

  • ESAB Welding Power Sources
  • ESAB Wire Feeders
  • Industrial Equipment with 1/4" Potentiometer Shafts
  • Voltage Control Replacement
  • Wire Feed Speed Dial Replacement

FAQ

This knob is designed to fit a standard 1/4-inch (6.35mm) diameter shaft, which is common for potentiometers on welding equipment.

Yes, this is an authentic ESAB OEM part (0321475892), ensuring it matches the original specifications of your machine.

Most D21 style knobs for 1/4" shafts are designed to be pushed on (friction fit) or secured with a small set screw or collet, depending on the specific sub-version. Check your old knob for a set screw hole.

It is specifically designed for ESAB machines requiring the D21 style knob. While it fits 1/4" shafts, the aesthetic and clearance might not match non-ESAB brands.

D21 typically refers to the knob's design series or diameter (approximately 21mm), indicating its size and form factor within the ESAB parts catalog.

Yes, these control knobs feature a visual indicator line or pointer to help operators see their settings for voltage, amperage, or wire speed.

The knob is made from industrial-grade plastic designed to withstand the typical thermal and mechanical environment of a welding shop.

Yes, as long as both controls on your specific ESAB machine use the same 1/4" shaft and D21 knob style, this part is interchangeable for those functions.